Home / 12,619.06-18,940.31-6,383.48

Finding the Fourth Proportional to 12,619.06, 18,940.31 and 6,383.48

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Solution

The fourth proportional to 12,619.06, 18,940.31 and 6,383.48 is: 9,581.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.06 : 18,940.31 = 6,383.48 : x
  2. Step 2: Convert to fraction form
    12,619.06/18,940.31 = 6,383.48/x
  3. Step 3: Cross multiply
    12,619.06x = 18,940.31 × 6,383.48
  4. Step 4: Simplify right side
    12,619.06x = 120,905,090.08
  5. Step 5: Solve for x
    x = 120,905,090.08/12,619.06
  6. Step 6: Final answer
    x = 9,581.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.